{
  "openapi": "3.0.0",
  "info": {
    "title": "AI 视频背景替换",
    "description": "# 概览\n\n**AI 视频背景替换**\n\n![](https://bcw-media.s3.ap-northeast-1.amazonaws.com/Green_Screen_ddb7892393.png)\n\nAI 视频背景替换接口可以让您把任意背景无缝加进画面。风景、自定义图片、趣味画面随您选，创作空间完全交给您，把视频场景做到最理想的状态。\n不用摄影棚，也不用绿幕。换掉视频背景轻轻松松，画面干净又专业。无论想换个新环境，还是去掉画面里多余的东西，这套方案都很合适，不必购置昂贵设备，就能做出好看的视频与教学片。\n\n\n---\n\n## 接入指南\n\n**1. 准备源视频与背景图片**\n输出为 MP4 格式，分辨率与输入一致；帧率上限为每秒 30 帧，输入超出时自动转换；时长上限 600 秒，输入视频更长时只保留前 600 秒。\n\n背景图片须为 JPG 或 PNG 格式，分辨率最高 4096 × 4096 像素，长边不超过 4096 像素，文件大小上限 10 MB。\n\n\n**2. 上传文件**\n通过以下接口取得上传 URL 与文件 ID：\n\n```\nPOST /s2s/v2.0/file\n```\n\n\n**3. 执行 AI 任务**\n\n```\nPOST /s2s/v2.0/task/bg-replace-vid\n```\n\n用文件 ID 或图片 URL 作为输入提交任务。响应会返回一个 task_id，用于追踪并取回结果。\n\n\n**4. 取回任务结果**\n\n```\nGET /s2s/v2.0/task/bg-replace-vid/{task_id}\n```\n\n用任务 ID 追踪状态并取得结果。\n\n可配置 [Webhooks](/develop/webhook.md)，在任务完成（状态为 success 或 error）时接收异步通知。也支持轮询：反复调用任务接口，直到状态从 running 变为 success 或 error。\n\n只有任务成功完成才计费。\n\n\n\n---\n\n## 文件规格与错误码\n\n* 支持的格式与尺寸\n\n|AI 功能|支持尺寸|支持文件大小|支持格式|\n|  ----  | ----  | ----  | ----  |\n| AI 视频背景替换 | 输出为 MP4 格式，分辨率与输入一致；帧率上限为每秒 30 帧，输入超出时自动转换；时长上限 600 秒，输入视频更长时只保留前 600 秒。 <br>背景图片须为 JPG 或 PNG 格式，分辨率最高 4096 × 4096 像素，长边不超过 4096 像素，文件大小上限 10 MB。 | 视频时长上限：600 秒 <br> 背景图片：<10MB | 封装格式：mp4 <br>视频编码：MPEG-4、MPEG-4 AVC，<br>音频编码：aac、amr、mp3 |\n\n* 错误码\n\n|错误码|说明|\n|  ----  | ----  |\n| error_download_video | 下载源视频出错 |\n| error_decode_video | 解码源视频出错 |\n| error_unsupported_video | 视频格式不受支持 |\n| exceed_max_filesize | 输入文件大小超出上限|\n| error_nsfw_content_detected | 在源文件中检测到不适宜内容（NSFW） |\n| error_decode_mask | 解码蒙版图片出错 |\n| invalid_parameter | 参数取值无效|\n\n* 运行环境与依赖\n\n| 示例代码语言 / 工具 | 建议运行时版本 |\n|---|---|\n| cURL | - bash >= 3.2</br>   - curl >= 7.58 (modern TLS/HTTP support)</br>   - jq >= 1.6 (robust JSON parsing) |\n| Node.js (JavaScript) | Node >= 18 (for global fetch) |\n| JavaScript | - Chrome / Edge >= 80</br>   - Firefox >= 74</br>   - Safari >= 13.1 |\n| PHP | PHP >= 7.4 (for modern TLS/compat), ext-curl (recommended) or allow_url_fopen=On + ext-openssl, ext-json |\n| Python | Python >= 3.10 (for f-strings), requests >= 2.20.0 |\n| Java | Java 11+ (for HttpClient), Jackson Databind >= 2.12.0 |\n\n---\n\n## 点数消耗\n\n| AI 功能 | 消耗点数 |\n|---|---|\n| AI 视频背景替换 V1.0 | 2（每秒）* |\n\n    > *若图片数量或视频时长不能整除，点数按向上取整计算。\n\n---\n",
    "version": "",
    "termsOfService": "https://www.makeupar.com/perfectbeauty/youcam/terms-of-service-api",
    "contact": {
      "email": "YouCamOnlineEditor_API@perfectcorp.com"
    },
    "license": {
      "name": "Privacy policy",
      "url": "https://www.makeupar.com/perfectbeauty/youcam/privacy-policy-api"
    }
  },
  "servers": [
    {
      "url": "https://yce-api-01.makeupar.com"
    }
  ],
  "tags": [
    {
      "name": "V1.0",
      "description": "AI 视频背景替换"
    }
  ],
  "paths": {
    "/s2s/v2.0/task/bg-replace-vid": {
      "post": {
        "summary": "执行 AI 视频背景替换 任务。",
        "description": "AI 任务是异步处理的。功能支持 Webhook 时，优先用 Webhook 来接收完成通知。配置好您的 Webhook 端点、校验 Webhook 签名，收到 `success` 或 `error` 通知后，用收到的 `task_id` 查询任务结果。配置与校验的细节请见 [Webhook 接入指南](/develop/webhook.md)。\n\n若功能不支持 Webhook，或您的接入方式用不了 Webhook，就请实现轮询。提交 AI 任务后，按固定间隔（例如每 10 秒）轮询状态接口，直到任务状态变为 `success` 或 `error`。\n",
        "tags": [
          "V1.0"
        ],
        "security": [
          {
            "BearerAuthenticationV2": []
          }
        ],
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "allOf": [
                  {
                    "$ref": "#/components/schemas/BasicRunTaskV2VidSrcWithRequiredRefImg"
                  },
                  {
                    "type": "object",
                    "properties": {
                      "background_mode": {
                        "type": "string",
                        "enum": [
                          "crop",
                          "stretch"
                        ],
                        "default": "crop",
                        "description": "背景图（参考文件）适配到源视频的方式。`crop` 保持背景宽高比， 裁剪后铺满；`stretch` 把背景缩放到源视频的尺寸。"
                      }
                    }
                  }
                ]
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "任务执行成功",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/BasicRunTaskResponseV2"
                }
              }
            }
          },
          "400": {
            "description": "任务执行失败",
            "content": {
              "application/json": {
                "schema": {
                  "allOf": [
                    {
                      "$ref": "#/components/schemas/RunError"
                    }
                  ]
                }
              }
            }
          },
          "401": {
            "$ref": "#/components/responses/InvalidApiKey"
          },
          "429": {
            "$ref": "#/components/responses/TooManyRequests"
          }
        }
      }
    },
    "/s2s/v2.0/task/bg-replace-vid/{task_id}": {
      "get": {
        "summary": "查询 AI 视频背景替换 任务的状态。",
        "tags": [
          "V1.0"
        ],
        "security": [
          {
            "BearerAuthenticationV2": []
          }
        ],
        "parameters": [
          {
            "name": "task_id",
            "in": "path",
            "required": true,
            "schema": {
              "type": "string",
              "example": "grH0CvsgXuAIHLUzD0V1Ol34hoet3R1tvdbtiVHrDb6_UqCLKIejAIajwxrhOAfe"
            },
            "description": "要查询的任务 ID"
          }
        ],
        "responses": {
          "200": {
            "description": "任务状态查询成功",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/TaskStatusResponseV2"
                }
              }
            }
          },
          "400": {
            "$ref": "#/components/responses/InvalidTaskId"
          },
          "401": {
            "$ref": "#/components/responses/InvalidApiKey"
          },
          "500": {
            "$ref": "#/components/responses/TaskTimeout"
          }
        }
      }
    }
  },
  "components": {
    "securitySchemes": {
      "BearerAuthenticationV2": {
        "type": "http",
        "scheme": "bearer",
        "description": "使用标准的 Bearer 鉴权。把您的 API 密钥放进请求头： `Authorization:Bearer YOUR_API_KEY`。请注意 'Bearer' 与 'YOUR_API_KEY' 之间有一个空格。"
      }
    },
    "schemas": {
      "BasicRunTaskV2VidSrcFileUrl": {
        "type": "object",
        "required": [
          "src_file_url"
        ],
        "properties": {
          "src_file_url": {
            "type": "string",
            "description": "用于运行任务的文件 URL，该 URL 需可公开访问。",
            "example": "https://example.com/cat_video.mp4"
          }
        }
      },
      "BasicRunTaskV2RefFileUrl": {
        "type": "object",
        "properties": {
          "ref_file_url": {
            "type": "string",
            "description": "用于运行任务的参考文件 URL，该 URL 需可公开访问。",
            "example": "https://example.com/accessory.jpg"
          }
        }
      },
      "BasicRunTaskV2RefFileId": {
        "type": "object",
        "properties": {
          "ref_file_id": {
            "type": "string",
            "description": "用于运行任务的参考文件 ID，取自上传文件接口返回的 file_id。",
            "example": "pfNK5PuRe0MrwLHcGA3DOmB1ahwfXTbYHjv+KoBIxbE="
          }
        }
      },
      "BasicRunTaskV2SrcFileId": {
        "type": "object",
        "required": [
          "src_file_id"
        ],
        "properties": {
          "src_file_id": {
            "type": "string",
            "description": "用于运行任务的文件 ID，取自上传文件接口返回的 file_id。",
            "example": "pfNK5PuRe0MrwLHcGA3DOmB1ahwfXTbYHjv+KoBIxbE="
          }
        }
      },
      "BasicRunTaskV2VidSrcWithRequiredRefImg": {
        "title": "BasicRunTaskV2VidSrcWithRequiredRefImg",
        "anyOf": [
          {
            "allOf": [
              {
                "title": "以源视频 URL 与参考文件 URL 运行任务",
                "required": [
                  "ref_file_url"
                ]
              },
              {
                "$ref": "#/components/schemas/BasicRunTaskV2VidSrcFileUrl"
              },
              {
                "$ref": "#/components/schemas/BasicRunTaskV2RefFileUrl"
              }
            ]
          },
          {
            "allOf": [
              {
                "title": "以源视频 URL 与参考文件 ID 运行任务",
                "required": [
                  "ref_file_id"
                ]
              },
              {
                "$ref": "#/components/schemas/BasicRunTaskV2VidSrcFileUrl"
              },
              {
                "$ref": "#/components/schemas/BasicRunTaskV2RefFileId"
              }
            ]
          },
          {
            "allOf": [
              {
                "title": "以源视频 ID 与参考文件 URL 运行任务",
                "required": [
                  "ref_file_url"
                ]
              },
              {
                "$ref": "#/components/schemas/BasicRunTaskV2SrcFileId"
              },
              {
                "$ref": "#/components/schemas/BasicRunTaskV2RefFileUrl"
              }
            ]
          },
          {
            "allOf": [
              {
                "title": "以源视频 ID 与参考文件 ID 运行任务",
                "required": [
                  "ref_file_id"
                ]
              },
              {
                "$ref": "#/components/schemas/BasicRunTaskV2SrcFileId"
              },
              {
                "$ref": "#/components/schemas/BasicRunTaskV2RefFileId"
              }
            ]
          }
        ]
      },
      "BasicRunTaskResponseV2": {
        "type": "object",
        "properties": {
          "status": {
            "type": "integer",
            "description": "响应状态",
            "example": 200
          },
          "data": {
            "type": "object",
            "properties": {
              "task_id": {
                "type": "string",
                "description": "该任务的 ID。凭这个 ID 可在 24 小时内查询任务结果。",
                "example": "grH0CvsgXuAIHLUzD0V1Ol34hoet3R1tvdbtiVHrDb6_UqCLKIejAIajwxrhOAfe"
              }
            }
          }
        }
      },
      "RunError": {
        "type": "object",
        "properties": {
          "status": {
            "type": "integer",
            "description": "响应状态",
            "example": 400
          },
          "error": {
            "type": "string",
            "description": "错误信息",
            "example": "The operation could not be completed"
          },
          "error_code": {
            "type": "string",
            "enum": [
              "InvalidParameters",
              "CreditInsufficiency",
              "InvalidStyleGroup",
              "InvalidStyle",
              "BadRequest"
            ],
            "description": "错误码：\n  * InvalidParameters - 请求参数无效\n  * CreditInsufficiency - 点数不足，无法运行\n  * BadRequest - 请求参数不符合预期\n  * InvalidStyleGroup - 风格分组 ID 无效\n  * InvalidStyle - 风格 ID 无效\n"
          }
        }
      },
      "EngineErrorCode": {
        "type": "string",
        "nullable": true,
        "enum": [
          "error_exceed_max_image_size",
          "exceed_max_filesize",
          "invalid_parameter",
          "error_download_image",
          "error_download_mask",
          "error_decode_image",
          "error_decode_mask",
          "error_nsfw_content_detected",
          "error_no_face",
          "error_pose",
          "error_face_parsing",
          "error_inference",
          "exceed_nsfw_retry_limits",
          "error_upload",
          "unknown_internal_error"
        ],
        "description": "错误码：\n- \\`error_exceed_max_image_size\\`  - 输入图片尺寸超出上限\n- \\`exceed_max_filesize\\` - 输入文件大小超出上限\n- \\`invalid_parameter\\` - 参数取值无效\n- \\`error_download_image\\` - 下载原图出错\n- \\`error_download_mask\\` - 下载蒙版图片出错\n- \\`error_decode_image\\` - 解码原图出错\n- \\`error_decode_mask\\` - 解码蒙版图片出错\n- \\`error_nsfw_content_detected\\` - 在原图中检测到不适宜内容（NSFW）\n- \\`error_no_face\\` - 原图中没有检测到人脸\n- \\`error_pose\\` - 原图的姿态检测失败\n- \\`error_face_parsing\\` - 原图的人脸分割失败\n- \\`error_inference\\` - 推理流程中出现错误\n- \\`exceed_nsfw_retry_limits\\` - 为避免生成不适宜内容， 重试次数已用尽\n- \\`error_upload\\` - 上传结果图片出错\n- \\`unknown_internal_error\\` - 其他错误\n"
      },
      "TaskStatusResponseBodySingleUrlResultsV2": {
        "type": "object",
        "properties": {
          "url": {
            "type": "string",
            "description": "下载该结果的 URL，有效期 2 小时",
            "example": "https://example.com/sample-result-url"
          }
        }
      },
      "TaskStatusResponseV2": {
        "type": "object",
        "properties": {
          "status": {
            "type": "integer",
            "description": "响应状态",
            "example": 200
          },
          "data": {
            "type": "object",
            "properties": {
              "task_status": {
                "type": "string",
                "enum": [
                  "running",
                  "success",
                  "error"
                ],
                "description": "任务状态"
              },
              "error": {
                "$ref": "#/components/schemas/EngineErrorCode"
              },
              "error_message": {
                "type": "string",
                "description": "错误的详细说明"
              },
              "results": null
            }
          }
        },
        "$ref": "#/components/schemas/TaskStatusResponseBodySingleUrlResultsV2"
      }
    },
    "responses": {
      "InvalidApiKey": {
        "description": "API 密钥无效或缺失",
        "content": {
          "application/json": {
            "schema": {
              "type": "object",
              "properties": {
                "status": {
                  "type": "integer",
                  "example": 401,
                  "description": "响应状态"
                },
                "error": {
                  "type": "string",
                  "example": "Invalid API key"
                }
              }
            }
          }
        }
      },
      "TooManyRequests": {
        "description": "请求过多",
        "content": {
          "application/json": {
            "schema": {
              "type": "object",
              "properties": {
                "status": {
                  "type": "integer",
                  "example": 429,
                  "description": "响应状态"
                },
                "error": {
                  "type": "string",
                  "example": "Too many requests"
                }
              }
            }
          }
        }
      },
      "InvalidTaskId": {
        "description": "任务 ID 无效",
        "content": {
          "application/json": {
            "schema": {
              "type": "object",
              "properties": {
                "status": {
                  "type": "integer",
                  "example": 400,
                  "description": "响应状态"
                },
                "error": {
                  "type": "string",
                  "example": "Invalid task ID"
                }
              }
            }
          }
        }
      },
      "TaskTimeout": {
        "description": "任务执行超时",
        "content": {
          "application/json": {
            "schema": {
              "type": "object",
              "properties": {
                "status": {
                  "type": "integer",
                  "example": 500,
                  "description": "响应状态"
                },
                "error": {
                  "type": "string",
                  "example": "Task execution timed out"
                }
              }
            }
          }
        }
      }
    }
  }
}